T08 · Insecure Dependencies
- Location
SKILL.md:239- Finding
Unpinned Third-Party Python Dependencies
- Content
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Vulnerability Details
File Location:
SKILL.md, lines 239-240
Vulnerability Type: Unpinned and unverifiable third-party dependencies
Risk Level: MediumVulnerable Code
markdown | Vectorization tool | Library | Recommended | pip install potrace | | Image processing library | Library | Recommended | pip install Pillow |Technical Analysis
The Skill instructs users to install third-party Python packages without specifying reviewed versions, package hashes, a lockfile, or a trusted package index. Consequently, package resolution depends on mutable package-index state and the user's local pip configuration.
Python package installation can execute package-controlled build logic. If a dependency release, transitive dependency, package-index account, or configured package source is compromised, following these commands could execute attacker-controlled code during installation. The lack of version and integrity constraints also makes builds non-reproducible and prevents verification that users install the same artifacts that were security-reviewed.
The packages are presented as recommended rather than automatically installed, which reduces exploitability but does not eliminate the supply-chain risk for users who follow the documented setup instructions.
Attack Path
- An attacker compromises a referenced package release, one of its transitive dependencies, or a package source configured in the user's pip environment.
- The user follows the documented
pip install potraceorpip install Pillowinstruction. - pip resolves the current package version and dependencies without checking against project-provided hashes or a reviewed lockfile.
- A malicious source distribution or build dependency executes attacker-controlled installation logic.
- The payload runs with the privileges of the account invoking pip and may access files, credentials, environment variables, and network resources available to that account.
- Impact c ...[truncated 890 chars]
- Remediation
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Remediation Suggestions
- Pin each direct dependency to a reviewed version rather than installing the latest available release:
text Pillow==<reviewed-version> potrace==<reviewed-version> - Generate and distribute a lockfile containing resolved transitive dependencies.
- Record cryptographic hashes for every permitted artifact and install with pip's
--require-hashesoption. - Explicitly use a trusted package index, while ensuring that mirrors and pip configuration cannot silently redirect resolution to an untrusted source.
- Prefer reviewed binary wheels where appropriate and disable unnecessary source builds.
- Install dependencies in an isolated virtual environment under an unprivileged account.
- Remove the recommendation to run with administrator privileges at
SKILL.md:415; instead, troubleshoot ownership and virtual-environment permissions using least privilege. - Add automated dependency scanning and periodically review pinned versions for known vulnerabilities.
- Document a controlled update process requiring integrity verification and security review before dependency versions are changed.
- Pin each direct dependency to a reviewed version rather than installing the latest available release: